blob: 8b37b4a1e18da3b891dbddd38d0bfe927d919859 [file] [log] [blame]
Randy Dunlap1e0051a2010-03-10 15:21:57 -08001#define _GNU_SOURCE /* needed to get the defines */
2#include <fcntl.h> /* in glibc 2.2 this has the needed
3 values defined */
4#include <signal.h>
5#include <stdio.h>
6#include <unistd.h>
7
8static volatile int event_fd;
9
10static void handler(int sig, siginfo_t *si, void *data)
11{
12 event_fd = si->si_fd;
13}
14
15int main(void)
16{
17 struct sigaction act;
18 int fd;
19
20 act.sa_sigaction = handler;
21 sigemptyset(&act.sa_mask);
22 act.sa_flags = SA_SIGINFO;
23 sigaction(SIGRTMIN + 1, &act, NULL);
24
25 fd = open(".", O_RDONLY);
26 fcntl(fd, F_SETSIG, SIGRTMIN + 1);
27 fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
28 /* we will now be notified if any of the files
29 in "." is modified or new files are created */
30 while (1) {
31 pause();
32 printf("Got event on fd=%d\n", event_fd);
33 }
34}